A 67 year old man in the intensive care unit develops fever and worsening oxygenation 8 days after intubation. Sputum culture grows a motile gram negative rod that forms red pigmented colonies and has caused outbreaks associated with contaminated respiratory equipment. Which of the following is the most likely causal organism?
- A)Pseudomonas aeruginosa
- B)Serratia marcescensGABARITO
- C)Klebsiella pneumoniae
- D)Enterococcus faecalis
- E)Escherichia coli
Explicação
Serratia marcescens is correct. Serratia is a nosocomial gram negative rod associated with ventilator related infection, urinary catheters, and contaminated hospital equipment. The red pigmented colony clue points specifically to Serratia. Ver explicação completa e trilha adaptativa →